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175 Carat Chrysoprase Rough Green Natural Chalcedony Crystal Cabochon Quartz Mineral Gemstone Rock for Carving - Madagascar
DESCRIPTION
All our minerals and crystals are carefully measured with digital measuring instruments that provide the high accuracy of numbers/values!
- You will receive exactly this Chrysoprase Rough - 41mm x 38mm x 20mm / 1 5/8 x 1 1/2 x 13/16 Inches; 35g / 1.2 oz / 175 Carat (see photo, some photos are taken wet, stand not included)!
- Chrysoprase is a distinct gemstone quality variety of chalcedony quartz, a cryptocrystalline form of silicon dioxide. Chrysoprase is highly prized for its opalescent minty, apple-green color, which is especially unique and is owed to its distinctive coloring agent.
- The name 'chrysoprase' originates from the Greek words, 'chrusos' and 'prason', meaning 'gold' and 'leek', respectively; referring to its leek-green color and the presence of golden inclusions. Chrysoprase frequently occurs in quartz veins of nickel-bearing serpentine rocks and in weathered deposits of nickel ore materials. Chrysoprase, like all other varieties of cryptocrystalline quartz, is composed of crystals that are too fine to be seen as distinct particles, even under magnification.
- Chemical Formula: SiO2, Silicon dioxide; Color: Green, apple-green; Hardness: 6.5 to 7 on the Mohs scale;
- (The above information is provided solely for informational purpose. Kindly note that all stones are offered for decorative purposes only. Please, handle your stones with great care, do not grind or crumble them, do not dip or add them into your food or drink, do not use any parts of them in any elixirs, potions, lotions etc. Always make sure you wash your hands before and after working with your crystals.)